CN2606573Y

CN2606573Y - Tooth-brush head driven by float transmission shaft

Info

Publication number: CN2606573Y
Application number: CN 02249871
Authority: CN
Inventors: 朱伟静; 陈谭余; 陈国成
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-11-25
Filing date: 2002-11-25
Publication date: 2004-03-17
Anticipated expiration: 2012-11-25

Abstract

A tooth-brush head driven by float transmission shaft comprises a brush head rod, a bristle bundle base, a transmission shaft and a bearing arranged in the brush head rod. The transmission shaft is a float transmission shaft with an eccentric sphere head, and a bearing with a long internal hole is arranged between the float transmission shaft and the brush head rod. The eccentric sphere head arranged at the head of the float transmission shaft is movably fitted with the round holes in the corresponding position of the bristle bundle base. The float transmission shaft rotates in the bearing long hole and floats along the length direction of the bearing to drive bristle bundle to swing side to side. The utility model adopts float transmission structure with movable cooperation of the eccentric sphere head at the head of the float transmission shaft with the round holes on the external wall of the bristle bundle base. The utility model has the advantages of few components, compact structure, high transmission efficiency, low noise and long service life.

Description

The head toothbrushes of float driving shaft transmission

Technical field

This utility model relates to electric toothbrush head, specifically is a kind of electric toothbrush head that adopts the float driving shaft transmission.

Background technology

Along with the market competition of electric toothbrush is more and more fierce, how under the prerequisite of guaranteed performance, prescription, simplify parts as far as possible, reduce cost, to improve the market competitiveness, be the key point of design powered toothbrush.

At present common electric toothbrush of the same type is varied, but ubiquitous problem or drive mechanism are complicated, and parts are more, and manufacturing cost is higher, and noise is big, and service life is short.

Summary of the invention

In view of the problems referred to above that existing electric toothbrush head exists, the utility model proposes a kind of head toothbrushes design of float driving shaft integral drive pieces seat.

The head toothbrushes of this float driving shaft transmission is the innovative product of existing electric toothbrush head.It comprises brush bar, pieces seat and is installed in brush bar interior power transmission shaft and bearing, it is characterized in that: power transmission shaft is the float driving shaft 2 with eccentric bulb, the endoporus of bearing 3 is a slotted hole, bearing 3 is installed between float driving shaft 2 and the brush bar 1, the circular hole of the eccentric bulb of float driving shaft 2 heads and pieces seat 4 relevant positions movingly, float driving shaft 2 rotates in bearing 3 slotted holes, and along the length direction of the slotted hole of bearing 3 float (or swing) drive the left and right swing of pieces seat.

This utility model is novel, uses float driving shaft the floating of the length direction of the microscler endoporus of bearing dexterously, and rotatablely moving of float driving shaft is transformed into the come back rotation of pieces seat around it.Simple in structure, brushhead portion only needs brush bar, float driving shaft, axle and four parts of pieces seat, and part is few, and cost is low.

Because the cooperation of float driving shaft and pieces seat is bulb and circular hole, reaches comparatively ideal cooperation easily, causes noise to reduce greatly.

Float driving shaft integral drive pieces seat, the loss of the middle transmission of minimizing, transmission efficiency height.Matching part is few, and the tired and gap of transmission position wearing and tearing increases slow, causes to be difficult for the noise that causes transmission malfunctioning and bigger, and prolong service life.

Description of drawings

Fig. 1 is the structure chart of this head toothbrushes, and wherein the eccentric bulb of float driving shaft is above axial line;

Fig. 2 is the structure chart of eccentric bulb state below axial line of its float driving shaft;

Fig. 3 is the structure chart of the eccentric bulb of its float driving shaft at the left state of axial line;

Fig. 4 is the structure chart of the eccentric bulb of its float driving shaft at the right-hand state of axial line;

Fig. 5 is the A-A cutaway view of Fig. 2.

The specific embodiment

Below in conjunction with accompanying drawing this utility model is further described.

With reference to Fig. 1-5, the head toothbrushes of this float driving shaft transmission comprises brush bar 1, float driving shaft 2, bearing 3 and pieces seat 4, the head of float driving shaft 2 is eccentric bulb 21, the circular hole 41 of described eccentric bulb 21 and pieces seat 4 relevant positions is for movingly, the external diameter of bearing 3 and brush bar 1 are tight fit, the endoporus 32 of bearing 3 is a slotted hole, bearing 3 cooperates for movingly with float driving shaft 2, and float driving shaft 2 can be along the length direction swing (or floating) of the slotted hole of bearing 3 when rotating in the endoporus of bearing 3.

Brush bar 1 is a tapered hollow body, and pieces seat 4 is installed in the round end of brush bar 1, and brush bar 1 inwall has an annular axial trough 11, is used for matching with the shaft shoulder 31 of bearing 3.The center is provided with positioning sleeve 12 in the round end of brush bar 1, is used for matching with the reference column 42 of pieces seat 4, and the round end inwall is provided with button 13 in the locking, is used for matching with the outer button 43 of the locking of pieces seat 4.

Offer some clean-out openings on the hollow brush bar 1 of taper, after head toothbrushes used up, available clear water cleaned toothbrush head, brush body inside can be cleaned up, and guaranteed the sanitation and hygiene of head toothbrushes.

The outer wall of bearing 3 and brush bar 1 are tight fit, and bearing 3 outer walls are provided with the shaft shoulder 31, and the described shaft shoulder 31 is installed in the annular axial trough 11 of brush bar 1 inwall, gets loose to prevent bearing.

Its operation principle is: when the handle output power of electric toothbrush, drive float driving shaft 2 and make its rotation, when float driving shaft rotates to bulb when being in the top of axial line, float driving shaft 2 is to the swing of the below of bearing 3 microscler endoporus as shown in Figure 1; When float driving shaft 2 rotates to bulb when being in the below of axial line, float driving shaft 2 is to the swing of the top of bearing 3 microscler endoporus as shown in Figure 2; With reference to Fig. 4, when float driving shaft 2 rotates to bulb when being in the left of axial line, owing to be subjected to the restriction of bearing 3, float driving shaft 2 can not be swung, and then the circular port of bulb by pieces seat 4 promotes pieces seat 4 and rotate around its axial clockwise direction.With reference to Fig. 5, when float driving shaft 2 rotates to bulb when being in axial line right-hand, the restriction that is subjected to bearing 3 equally can not be swung and be promoted pieces seat 4 to counterclockwise rotating.

From Fig. 1 state, by Fig. 2, Fig. 3, Fig. 4 state, return Fig. 1 state, float driving shaft 2 and pieces seat 4 are finished a period of motion, go round and begin again, and then realize the back rotation of coming of pieces seat 4 by the rotation of float driving shaft 2.

The size of pieces seat 4 rotational angles depends on the side-play amount of bulb and its axial line of float driving shaft 2, and the center of bulb and the distance in pieces seat 4 axle center.The former side-play amount is big more, and the latter's distance is more little, and then the angle of rotation of pieces seat 4 is big more, otherwise the angle of rotation of pieces seat is more little.

Claims

1, a kind of head toothbrushes of float driving shaft transmission, comprise the brush bar, pieces seat and be installed in power transmission shaft and bearing in the brush bar, it is characterized in that: power transmission shaft is the float driving shaft (2) with eccentric bulb, the endoporus of bearing (3) is a slotted hole, bearing (3) is installed between float driving shaft (2) and the brush bar (1), the circular hole of the eccentric bulb of float driving shaft (2) head and pieces seat (4) relevant position movingly, float driving shaft (2) rotates in bearing (3) slotted hole, and floats along the length direction of the slotted hole of bearing (3) and to drive a pieces seat left side, right swing.

2, according to the head toothbrushes of the described float driving shaft transmission of claim 1, it is characterized in that: bearing (3) is a tight fit with brush bar (1).

3, according to the head toothbrushes of the described float driving shaft transmission of claim 2, it is characterized in that: bearing (3) outer wall is provided with the shaft shoulder (31), and the described shaft shoulder (31) is installed in the annular axial trough (11) of brush bar (1) inwall.